{"/e/earth/natural-environment/": {"t": "Natural environment", "s": "The natural world includes all living and non-living things occurring without human artifice."}, "https://codexery.com/planets-and-dwarf-planets/e/planets-and-dwarf-planets/earth/": {"t": "Earth", "s": "The only known planet with liquid surface water and life."}, "https://codexery.com/named-stars/e/named-stars/sun/": {"t": "Sun", "s": "The Sun is the central star of the Solar System."}, "https://codexery.com/planets-stellar-astronomy/e/planets-and-stellar-astronomy/solar-system/": {"t": "Solar System", "s": "The Sun and all objects gravitationally bound to it.", "i": "https://codexery.com/planets-stellar-astronomy/img/planets-and-stellar-astronomy/solar-system.webp", "c": "via Wikipedia: Solar System · see source"}, "https://codexery.com/meteorology/e/meteorology/water-cycle/": {"t": "Water cycle", "s": "Continuous movement of water across Earth's reservoirs."}, "/e/earth/history-of-earth/": {"t": "History of Earth", "s": "Earth's 4.54-billion-year journey from molten rock to diverse life."}, "/e/earth/future-of-earth/": {"t": "Future of Earth", "s": "Earth's long-term future involves solar brightening, tectonic shifts, and astronomical hazards."}, "https://codexery.com/science-and-technology/e/science-and-technology/natural-science/": {"t": "Natural science", "s": "Empirical study of natural phenomena through observation and experimentation."}, "https://codexery.com/ecology-and-behavior/e/ecology-and-behavior/biosphere/": {"t": "Biosphere", "s": "The global sum of all ecosystems and zone of life on Earth.", "i": "https://codexery.com/ecology-and-behavior/img/ecology-and-behavior/biosphere.webp", "c": "Christopher Michel · CC BY-SA 4.0"}, "https://codexery.com/geology/e/geology/cryosphere/": {"t": "Cryosphere", "s": "Earth's frozen water component, critical to climate feedbacks.", "i": "https://codexery.com/geology/img/geology/cryosphere.webp", "c": "NASA/Goddard Space Flight Center Scientific Visualization Studio · Public domain"}, "https://codexery.com/geology-earth-science/e/geology-and-earth-science/lithosphere/": {"t": "Lithosphere", "s": "The rigid outer shell of Earth, comprising the crust and lithospheric mantle."}, "https://codexery.com/geology/e/geology/earth-s-crust/": {"t": "Earth's crust", "s": "Earth's crust is its thick outer shell of rock, comprising less than one percent of the planet's radius and volume.", "i": "https://codexery.com/geology/img/geology/earth-s-crust.webp", "c": "User:Zakapedia · CC BY-SA 3.0"}, "https://codexery.com/geology/e/geology/geophysics/": {"t": "Geophysics", "s": "The physical science of Earth and planetary processes"}, "https://codexery.com/fossils/e/fossils/paleontology/": {"t": "Paleontology", "s": "The scientific study of ancient life through fossils."}, "https://codexery.com/geology/e/geology/geomorphology/": {"t": "Geomorphology", "s": "Study of Earth's surface form and change."}, "https://codexery.com/geology-earth-science/e/geology-and-earth-science/mineralogy/": {"t": "Mineralogy", "s": "Scientific study of minerals, their properties, and crystal structures."}, "https://codexery.com/crystallography/e/crystallography/crystal-structure/": {"t": "Crystal structure", "s": "Ordered arrangement of particles in crystalline materials.", "i": "https://codexery.com/crystallography/img/crystallography/crystal-structure.webp", "c": "Biochemlife · CC BY-SA 4.0"}, "https://codexery.com/geology-earth-surface/e/geology-and-earth-surface/petrology/": {"t": "Petrology", "s": "Branch of geology studying rocks and their formation.", "i": "https://codexery.com/geology-earth-surface/img/geology-and-earth-surface/petrology.webp", "c": "Henderson, Charles W.; Michael, Graham John.; Winstanley, J. B. · Public domain"}, "https://codexery.com/geology-earth-surface/e/geology-and-earth-surface/plate-tectonics/": {"t": "Plate tectonics", "s": "Scientific theory of Earth's moving lithospheric plates.", "i": "https://codexery.com/geology-earth-surface/img/geology-and-earth-surface/plate-tectonics.webp", "c": "Surachit · CC BY-SA 3.0"}, "https://codexery.com/geology-earth-science/e/geology-and-earth-science/volcano/": {"t": "Volcano", "s": "A vent in a planet's crust that erupts magma."}, "https://codexery.com/particle-and-nuclear-physics/e/particle-and-nuclear-physics/radioactive-decay/": {"t": "Radioactive decay", "s": "Unstable atomic nuclei lose energy by emitting radiation."}, "https://codexery.com/volcanology/e/volcanology/subduction/": {"t": "Subduction", "s": "Subduction recycles lithosphere into the mantle, driving plate tectonics."}, "https://codexery.com/structural-geology-and-tectonics/e/structural-geology-and-tectonics/asthenosphere/": {"t": "Asthenosphere", "s": "Ductile upper mantle layer enabling plate tectonics."}, "https://codexery.com/science-and-technology/e/science-and-technology/meteorology/": {"t": "Meteorology", "s": "Study of Earth's atmosphere and weather forecasting."}, "https://codexery.com/chemistry-materials/e/chemistry-and-materials/nitrogen/": {"t": "Nitrogen", "s": "Nitrogen is a colourless, odourless diatomic gas forming 78% of Earth's air."}, "https://codexery.com/meteorology/e/meteorology/greenhouse-effect/": {"t": "Greenhouse effect", "s": "The greenhouse effect is the trapping of heat by gases in a planet's atmosphere, raising its surface temperature."}, "https://codexery.com/geology/e/geology/earth-s-magnetic-field/": {"t": "Earth's magnetic field", "s": "Earth's magnetic field, generated by a geodynamo in the outer core, protects the planet from solar wind and cosmic rays."}, "https://codexery.com/food-and-drink/e/food-and-drink/drinking-water/": {"t": "Drinking water", "s": "Water safe for ingestion, essential for health, scarce for billions."}, "https://codexery.com/nutrition-and-diet/e/nutrition-and-diet/nutrient/": {"t": "Nutrient", "s": "Substance used by organisms to survive, grow, and reproduce."}, "https://codexery.com/spatial-analysis-gis/e/spatial-analysis-and-gis/human-geography/": {"t": "Human geography", "s": "Study of spatial relationships between human communities and their environments."}, "https://codexery.com/geology/e/geology/hotspot-geology/": {"t": "Hotspot (geology)", "s": "Volcanic locales fed by anomalously hot mantle, independent of plate boundaries.", "i": "https://codexery.com/geology/img/geology/hotspot-geology.webp", "c": "Los688 · Public domain"}, "https://codexery.com/geology-earth-surface/e/geology-and-earth-surface/pedosphere/": {"t": "Pedosphere", "s": "The outermost soil layer of Earth's crust."}, "https://codexery.com/notable-asteroids/e/notable-asteroids/near-earth-asteroid/": {"t": "Near-Earth asteroid", "s": "Near-Earth asteroids are small bodies whose orbits bring them close to Earth."}, "https://codexery.com/astronomy-space/e/astronomy-and-space/impact-event/": {"t": "Impact event", "s": "Collisions between astronomical objects that shape planets and life."}, "https://codexery.com/geology/e/geology/cretaceous-paleogene-extinction-event/": {"t": "Cretaceous–Paleogene extinction event", "s": "Mass extinction that ended the age of non-avian dinosaurs.", "i": "https://codexery.com/geology/img/geology/cretaceous-paleogene-extinction-event.webp", "c": "Wilson44691 · CC0"}, "https://codexery.com/probability-and-stochastic-processes/e/probability-and-stochastic-processes/law-of-large-numbers/": {"t": "Law of large numbers", "s": "Averages of many trials converge to the expected value."}, "https://codexery.com/european-scientific-pioneers/e/european-scientific-pioneers/stephen-hawking/": {"t": "Stephen Hawking", "s": "English theoretical astrophysicist who predicted Hawking radiation.", "i": "https://codexery.com/european-scientific-pioneers/img/european-scientific-pioneers/stephen-hawking.webp", "c": "via Wikipedia: Stephen Hawking · see source"}, "https://codexery.com/space-program-of-the-united-states/e/space-program-of-the-united-states/sentry-monitoring-system/": {"t": "Sentry (monitoring system)", "s": "Automated system monitoring asteroid impact risks over 100 years."}, "https://codexery.com/nasa-space-probes/e/nasa-space-probes/double-asteroid-redirection-test/": {"t": "Double Asteroid Redirection Test", "s": "NASA mission testing asteroid deflection via kinetic impact."}, "https://codexery.com/egyptian-mythology-in-popular-culture/e/egyptian-mythology-in-popular-culture/99942-apophis/": {"t": "99942 Apophis", "s": "A near-Earth asteroid that briefly threatened Earth in 2029."}, "https://codexery.com/nasa-space-probes/e/nasa-space-probes/deep-impact-spacecraft/": {"t": "Deep Impact (spacecraft)", "s": "First mission to eject material from a comet's surface."}, "https://codexery.com/extraterrestrial-orbiters/e/extraterrestrial-orbiters/rosetta-spacecraft/": {"t": "Rosetta (spacecraft)", "s": "First spacecraft to orbit and land on a comet."}, "https://codexery.com/notable-asteroids/e/notable-asteroids/asteroid-impact-prediction/": {"t": "Asteroid impact prediction", "s": "Predicting when and where asteroids will strike Earth."}, "https://codexery.com/us-cities/e/us-cities/tucson-arizona/": {"t": "Tucson, Arizona", "s": "Second-largest city in Arizona, founded as a Spanish presidio in 1775."}, "https://codexery.com/optical-telescopes/e/optical-telescopes/pan-starrs/": {"t": "Pan-STARRS", "s": "Surveying the sky for moving or variable objects continually."}, "https://codexery.com/optical-telescopes/e/optical-telescopes/asteroid-terrestrial-impact-last-alert-system/": {"t": "Asteroid Terrestrial-impact Last Alert System", "s": "Robotic survey providing days to weeks of warning for smaller asteroid impacts."}, "https://codexery.com/planets-and-dwarf-planets/e/planets-and-dwarf-planets/venus/": {"t": "Venus", "s": "Earth's twin, hottest planet, shrouded in sulfuric acid clouds."}, "https://codexery.com/stars-and-stellar-objects/e/stars-and-stellar-objects/asteroid/": {"t": "Asteroid", "s": "Rocky, metallic, or icy minor planets orbiting the Sun, mostly in the main belt between Mars and Jupiter."}, "https://codexery.com/optical-telescopes/e/optical-telescopes/vera-c-rubin-observatory/": {"t": "Vera C. Rubin Observatory", "s": "A wide-field telescope surveying the southern sky every few nights."}, "https://codexery.com/historical-figures/e/notable/carl-sagan/": {"t": "Carl Sagan", "s": "American astronomer and influential science communicator."}, "https://codexery.com/scientists-and-mathematicians/e/scientists-and-mathematicians/eratosthenes/": {"t": "Eratosthenes", "s": "Ancient Greek polymath who first measured Earth's circumference."}, "https://codexery.com/transportation/e/transportation/navigation/": {"t": "Navigation", "s": "The art and science of directing movement from one place to another."}, "https://codexery.com/units-measurement/e/units-and-measurement/nautical-mile/": {"t": "Nautical mile", "s": "Unit of length for air, marine, and space navigation."}, "/e/earth/earth-radius/": {"t": "Earth radius", "s": "Distance from Earth's center to its surface, varying by location."}, "https://codexery.com/pre-columbian-empires/e/pre-columbian-empires/ptolemaic-kingdom/": {"t": "Ptolemaic Kingdom", "s": "The Greek-ruled Egyptian kingdom of the Ptolemies, from Ptolemy I in 305 BC to Cleopatra VII in 30 BC.", "i": "https://codexery.com/pre-columbian-empires/img/pre-columbian-empires/ptolemaic-kingdom.webp", "c": "via Wikipedia: Ptolemaic Kingdom · see source"}, "https://codexery.com/phantom-places-discovery/e/phantom-places-and-discovery/surveying/": {"t": "Surveying", "s": "Surveying determines positions for maps, boundaries, and construction."}, "https://codexery.com/philosophers-and-logicians/e/philosophers-and-logicians/posidonius/": {"t": "Posidonius", "s": "Greek polymath who spread Stoicism and studied tides."}, "https://codexery.com/scientists-and-mathematicians/e/scientists-and-mathematicians/pliny-the-elder/": {"t": "Pliny the Elder", "s": "Roman author and naturalist who wrote the encyclopedic Natural History and died rescuing others from Mount Vesuvius."}, "https://codexery.com/historical-figures/e/notable/hipparchus/": {"t": "Hipparchus", "s": "Greek astronomer, geographer, and mathematician; founder of trigonometry and discoverer of the precession of the equinoxes."}, "https://codexery.com/ancient-classical-texts/e/ancient-and-classical-texts/geography-ptolemy/": {"t": "Geography (Ptolemy)", "s": "A 2nd-century gazetteer and atlas foundational to later cartography."}, "https://codexery.com/explorers/e/great-explorers/christopher-columbus/": {"t": "Christopher Columbus", "s": "Italian explorer who opened the Americas to European colonization.", "i": "https://codexery.com/explorers/img/great-explorers/christopher-columbus.webp", "c": "via Wikipedia: Christopher Columbus · see source"}, "https://codexery.com/reformers-and-leaders-of-the-americas-an/e/reformers-and-leaders-of-the-americas-and-beyond/al-ma-mun/": {"t": "Al-Ma'mun", "s": "Seventh Abbasid caliph who fostered the Islamic Golden Age."}, "https://codexery.com/cities/e/cultural/barcelona/": {"t": "Barcelona", "s": "Capital of Catalonia, Mediterranean metropolis, and global cultural hub."}, "https://codexery.com/units-measurement/e/units-and-measurement/metre/": {"t": "Metre", "s": "Base SI unit of length, defined by light in vacuum."}, "https://codexery.com/planets-and-dwarf-planets/e/planets-and-dwarf-planets/mars/": {"t": "Mars", "s": "The fourth planet from the Sun, a desert world with polar ice caps."}, "https://codexery.com/astronomy-space/e/astronomy-and-space/mercury-planet/": {"t": "Mercury (planet)", "s": "Smallest planet and closest to the Sun."}, "https://codexery.com/electromagnetism-and-radiation/e/electromagnetism-and-radiation/radiation/": {"t": "Radiation", "s": "Energy emitted as waves or particles through space or matter."}, "https://codexery.com/minerals-ore-deposits/e/minerals-and-ore-deposits/perovskite/": {"t": "Perovskite", "s": "Mineral whose structure enables diverse engineered materials."}, "https://codexery.com/minerals-and-gems/e/minerals-and-gems/olivine/": {"t": "Olivine", "s": "A common mantle mineral that drives plate tectonics and weathers rapidly."}, "https://codexery.com/gemstones/e/gemstones/garnet/": {"t": "Garnet", "s": "Silicate minerals used as gemstones and abrasives since the Bronze Age.", "i": "https://codexery.com/gemstones/img/gemstones/garnet.webp", "c": "James St. John · CC BY 2.0"}, "https://codexery.com/chemistry-materials/e/chemistry-and-materials/magnesium/": {"t": "Magnesium", "s": "Lightweight metal essential to life and industry."}, "https://codexery.com/classical-mechanics/e/classical-mechanics/viscosity/": {"t": "Viscosity", "s": "Viscosity quantifies a fluid's internal resistance to flow."}, "https://codexery.com/geology-earth-science/e/geology-and-earth-science/mid-ocean-ridge/": {"t": "Mid-ocean ridge", "s": "The global mid-oceanic ridge system is the longest mountain range on Earth."}, "https://codexery.com/geology-earth-science/e/geology-and-earth-science/igneous-rock/": {"t": "Igneous rock", "s": "One of the three main rock types, formed from cooling magma or lava."}, "https://codexery.com/chemistry/e/chemistry/hafnium/": {"t": "Hafnium", "s": "A lustrous, silvery gray, tetravalent transition metal, hafnium chemically resembles zirconium and is found in many zirconium minerals.", "i": "https://codexery.com/chemistry/img/chemistry/hafnium.webp", "c": "commons:User:Pumbaa (original work by commons:User:Greg Robson ) · CC BY-SA 2.0 uk"}, "https://codexery.com/structural-geology-and-tectonics/e/structural-geology-and-tectonics/continental-drift/": {"t": "Continental drift", "s": "Theory of moving continents, rejected then validated."}, "/e/earth/earth-s-rotation/": {"t": "Earth's rotation", "s": "Earth spins eastward, slowing over time but recently accelerating."}, "https://codexery.com/classical-mechanics-and-dynamics/e/classical-mechanics-and-dynamics/moment-of-inertia/": {"t": "Moment of inertia", "s": "Measure of rotational inertia, analogous to mass in linear motion."}, "https://codexery.com/meteorology/e/meteorology/el-ni-o-southern-oscillation/": {"t": "El Niño–Southern Oscillation", "s": "A global climate phenomenon driven by winds and sea surface temperatures in the tropical Pacific.", "i": "https://codexery.com/meteorology/img/meteorology/el-ni-o-southern-oscillation.webp", "c": "via Wikipedia: El Niño–Southern Oscillation · see source"}, "https://codexery.com/geology-earth-surface/e/geology-and-earth-surface/seismology/": {"t": "Seismology", "s": "Scientific study of earthquakes and elastic wave propagation."}, "https://codexery.com/geology-earth-science/e/geology-and-earth-science/magma/": {"t": "Magma", "s": "Molten rock beneath Earth's surface, source of all igneous rocks."}, "https://codexery.com/crystallography/e/crystallography/crystallization/": {"t": "Crystallization", "s": "Process forming ordered solids from solution, melt, or gas."}, "https://codexery.com/minerals-and-gems/e/minerals-and-gems/magnesite/": {"t": "Magnesite", "s": "Magnesite is a magnesium carbonate mineral used in refractories and carbon sequestration."}, "https://codexery.com/reaction-mechanisms-and-kinetics/e/reaction-mechanisms-and-kinetics/redox/": {"t": "Redox", "s": "Chemical reactions where oxidation states change via electron or atom transfer."}, "https://codexery.com/reaction-mechanisms-and-kinetics/e/reaction-mechanisms-and-kinetics/tetrahedral-molecular-geometry/": {"t": "Tetrahedral molecular geometry", "s": "Four substituents at tetrahedron corners around a central atom."}, "https://codexery.com/structural-geology-and-tectonics/e/structural-geology-and-tectonics/core-mantle-boundary/": {"t": "Core–mantle boundary", "s": "Boundary between Earth's mantle and liquid outer core."}, "https://codexery.com/crystallography/e/crystallography/coordination-number/": {"t": "Coordination number", "s": "Number of atoms bonded to a central atom in a molecule or crystal.", "i": "https://codexery.com/crystallography/img/crystallography/coordination-number.webp", "c": "Ronit.kumar.10485 · CC BY-SA 3.0"}, "https://codexery.com/society-and-culture/e/society-and-culture/poverty/": {"t": "Poverty", "s": "A condition of lacking financial resources and essentials for basic living."}, "https://codexery.com/human-evolution/e/human-evolution/homo-erectus/": {"t": "Homo erectus", "s": "First human species to leave Africa and pioneer Acheulean tools."}, "https://codexery.com/cultural-and-historical-regions/e/cultural-and-historical-regions/eurasia/": {"t": "Eurasia", "s": "The largest continental area on Earth, spanning Europe and Asia."}, "https://codexery.com/ancient-civilizations/e/ancient-civilizations/neolithic-revolution/": {"t": "Neolithic Revolution", "s": "The wide-scale transition from hunting and gathering to agriculture and settlement in the Neolithic period.", "i": "https://codexery.com/ancient-civilizations/img/ancient-civilizations/neolithic-revolution.webp", "c": "via Wikipedia: Neolithic Revolution · see source"}, "https://codexery.com/lost-civilizations/e/lost-civilizations/the-indus-valley-civilization/": {"t": "The Indus Valley Civilization", "s": "One of four ancient centres of the world, spanning Pakistan, India, and Afghanistan."}, "https://codexery.com/criminal-law-procedure/e/criminal-law-and-procedure/crime/": {"t": "Crime", "s": "An unlawful act punishable by a state or other authority."}, "https://codexery.com/religious-traditions/e/religious-traditions/christianity/": {"t": "Christianity", "s": "World's largest religion, centered on Jesus Christ."}, "https://codexery.com/regions-cultural-spheres/e/regions-and-cultural-spheres/western-world/": {"t": "Western world", "s": "An evolving cultural, political, and economic concept of diverse groups."}, "https://codexery.com/fifa-world-cup/e/honours/soviet-union/": {"t": "Soviet Union", "s": "The world's flagship communist state and a superpower spanning Eurasia."}, "https://codexery.com/religious-traditions/e/religious-traditions/eastern-christianity/": {"t": "Eastern Christianity", "s": "Eastern Christianity encompasses diverse traditions originating in the Eastern Mediterranean.", "i": "https://codexery.com/religious-traditions/img/religious-traditions/eastern-christianity.webp", "c": "via Wikipedia: Christianity · see source"}, "https://codexery.com/countries-and-regions/e/countries-and-regions/middle-east/": {"t": "Middle East", "s": "A geopolitical region encompassing West Asia, Egypt, and European Turkey, rich in history and strategic importance."}, "https://codexery.com/countries-and-regions/e/countries-and-regions/latin-america/": {"t": "Latin America", "s": "The cultural region of the Americas where Romance languages are predominantly spoken.", "i": "https://codexery.com/countries-and-regions/img/countries-and-regions/latin-america.webp", "c": "Henrykez · CC BY-SA 4.0"}, "https://codexery.com/cultural-and-historical-regions/e/cultural-and-historical-regions/eastern-europe/": {"t": "Eastern Europe", "s": "A contested subregion with shifting cultural and political boundaries."}, "https://codexery.com/infectious-diseases/e/infectious-diseases/hiv/": {"t": "HIV", "s": "Retrovirus causing AIDS, transmitted via bodily fluids."}, "https://codexery.com/islands-and-archipelagos/e/islands-and-archipelagos/northern-mariana-islands/": {"t": "Northern Mariana Islands", "s": "U.S. territory in the Pacific, settled by Austronesian peoples."}, "https://codexery.com/countries-and-territories/e/countries-and-territories/georgia-country/": {"t": "Georgia (country)", "s": "A country at the crossroads of Europe and Asia, with ancient winemaking traditions and a pro-Western trajectory."}, "https://codexery.com/peninsulas-and-cape-landforms/e/peninsulas-and-cape-landforms/arabian-peninsula/": {"t": "Arabian Peninsula", "s": "World's largest peninsula, roughly comparable in size to India", "i": "https://codexery.com/peninsulas-and-cape-landforms/img/peninsulas-and-cape-landforms/arabian-peninsula.webp", "c": "SeaWiFS Project, NASA/Goddard Space Flight Center, and ORBIMAGE · via Wikipedia: Arabian Peninsula · Public domain"}, "https://codexery.com/fifa-world-cup/e/honours/saudi-arabia/": {"t": "Saudi Arabia", "s": "The Kingdom of Saudi Arabia: a land of ancient heritage, vast deserts, and global influence.", "i": "https://codexery.com/fifa-world-cup/img/honours/saudi-arabia.webp", "c": "via Wikipedia: Saudi Arabia at the FIFA World Cup · see source"}, "https://codexery.com/units-measurement/e/units-and-measurement/watt/": {"t": "Watt", "s": "SI unit of power, equal to one joule per second."}, "https://codexery.com/volcanology/e/volcanology/volcanism/": {"t": "Volcanism", "s": "Eruption of molten material from a planet or moon's interior."}, "https://codexery.com/scientists-and-mathematicians/e/scientists-and-mathematicians/lord-kelvin/": {"t": "Lord Kelvin", "s": "Scottish mathematician, physicist, and engineer who determined absolute zero and helped formulate the laws of thermodynamics."}, "https://codexery.com/structural-geology-and-tectonics/e/structural-geology-and-tectonics/continental-crust/": {"t": "Continental crust", "s": "Continental crust forms the landmasses and shallow seabeds of Earth."}, "https://codexery.com/coastal-marine-geology/e/coastal-and-marine-geology/oceanic-crust/": {"t": "Oceanic crust", "s": "Thinner, denser layer of tectonic plates beneath the oceans."}, "https://codexery.com/classical-mechanics-and-dynamics/e/classical-mechanics-and-dynamics/potential-energy/": {"t": "Potential energy", "s": "Energy stored in an object's position or configuration."}, "https://codexery.com/relativity-and-gravitation/e/relativity-and-gravitation/gravitational-potential/": {"t": "Gravitational potential", "s": "Scalar potential representing work per unit mass in a gravitational field.", "i": "https://codexery.com/relativity-and-gravitation/img/relativity-and-gravitation/gravitational-potential.webp", "c": "MikeRun · CC BY-SA 4.0"}, "https://codexery.com/classical-mechanics-and-dynamics/e/classical-mechanics-and-dynamics/kinetic-energy/": {"t": "Kinetic energy", "s": "Energy of motion, quantified as ½mv² in classical mechanics."}, "https://codexery.com/astronomy-space/e/astronomy-and-space/io-moon/": {"t": "Io (moon)", "s": "Io is Jupiter's innermost Galilean moon, the most volcanically active body known."}, "https://codexery.com/ancient-greek-astronomy/e/ancient-greek-astronomy/spherical-earth/": {"t": "Spherical Earth", "s": "Earth is approximately spherical, confirmed by ancient and modern science."}, "https://codexery.com/phantom-places-discovery/e/phantom-places-and-discovery/geography/": {"t": "Geography", "s": "Geography is the study of Earth's lands, features, inhabitants, and phenomena."}, "https://codexery.com/lines-hemispheres/e/lines-and-hemispheres/geographic-coordinate-system/": {"t": "Geographic coordinate system", "s": "A spherical or geodetic coordinate system for measuring positions on Earth as latitude and longitude."}, "https://codexery.com/physical-geography-elevation/e/physical-geography-and-elevation/topography/": {"t": "Topography", "s": "Study of land surface forms and features.", "i": "https://codexery.com/physical-geography-elevation/img/physical-geography-and-elevation/topography.webp", "c": "NASA/Johns Hopkins University Applied Physics Laboratory/Carnegie Institution of · Public domain"}, "https://codexery.com/maps-their-symbols/e/maps-and-their-symbols/geoid/": {"t": "Geoid", "s": "The geoid is Earth's gravity-defined equipotential surface."}, "/e/earth/earth-science/": {"t": "Earth science", "s": "Study of Earth's physical, chemical, and biological systems and interactions."}, "https://codexery.com/flight-instruments-and-avionics/e/flight-instruments-and-avionics/inertial-navigation-system/": {"t": "Inertial navigation system", "s": "A self-contained navigation system using accelerometers and gyroscopes."}, "https://codexery.com/historical-figures/e/notable/isaac-newton/": {"t": "Isaac Newton", "s": "English polymath who formulated laws of motion and universal gravitation."}, "https://codexery.com/scientists-and-mathematicians/e/scientists-and-mathematicians/christiaan-huygens/": {"t": "Christiaan Huygens", "s": "Dutch polymath who advanced optics, mechanics, and astronomy."}, "https://codexery.com/lines-hemispheres/e/lines-and-hemispheres/equator/": {"t": "Equator", "s": "Imaginary line dividing Earth into Northern and Southern Hemispheres."}, "https://codexery.com/satellite-navigation-and-gps/e/satellite-navigation-and-gps/world-geodetic-system/": {"t": "World Geodetic System", "s": "Standard for Earth-centered coordinates, geodesy, and satellite navigation."}, "https://codexery.com/space-missions/e/space-missions/sputnik-1/": {"t": "Sputnik 1", "s": "Sputnik 1, meaning \"Satellite-One\" in Russian, was the first artificial Earth satellite."}, "https://codexery.com/astronomers-and-astrophysicists/e/astronomers-and-astrophysicists/giovanni-domenico-cassini/": {"t": "Giovanni Domenico Cassini", "s": "Giovanni Domenico Cassini, an Italian-French mathematician, astronomer, astrologer, and engineer, was born in Perinaldo, near Imperia, in the County of Nice, pa"}, "https://codexery.com/lines-hemispheres/e/lines-and-hemispheres/south-pole/": {"t": "South Pole", "s": "Southernmost point on Earth, marked by shifting ice and historic expeditions."}, "https://codexery.com/lines-hemispheres/e/lines-and-hemispheres/north-pole/": {"t": "North Pole", "s": "Northernmost point on Earth, located in the Arctic Ocean."}, "/e/earth/gravity-of-earth/": {"t": "Gravity of Earth", "s": "Earth's gravity varies by location due to rotation and shape."}, "https://codexery.com/relativity-and-gravitation/e/relativity-and-gravitation/gravitational-field/": {"t": "Gravitational field", "s": "A vector field explaining gravitational influences around a body.", "i": "https://codexery.com/relativity-and-gravitation/img/relativity-and-gravitation/gravitational-field.webp", "c": "MikeRun · CC BY-SA 4.0"}, "https://codexery.com/orbits-and-celestial-mechanics/e/orbits-and-celestial-mechanics/orbital-eccentricity/": {"t": "Orbital eccentricity", "s": "Parameter measuring deviation of an orbit from a perfect circle."}, "https://codexery.com/classical-and-fluid-mechanics/e/classical-and-fluid-mechanics/precession/": {"t": "Precession", "s": "A change in the orientation of a rotating body's rotational axis."}, "https://codexery.com/minerals-ore-deposits/e/minerals-and-ore-deposits/silicate-mineral/": {"t": "Silicate mineral", "s": "Silicate minerals form 90% of Earth's crust."}, "https://codexery.com/planets-stellar-astronomy/e/planets-and-stellar-astronomy/red-giant/": {"t": "Red giant", "s": "A late-phase, luminous giant star with an inflated atmosphere."}, "https://codexery.com/taxonomy-evolution/e/taxonomy-and-evolution/species/": {"t": "Species", "s": "Basic unit of classification and biodiversity."}, "https://codexery.com/ecology-and-behavior/e/ecology-and-behavior/habitat-destruction/": {"t": "Habitat destruction", "s": "Leading cause of biodiversity loss and species extinction worldwide."}, "https://codexery.com/ecology-and-behavior/e/ecology-and-behavior/invasive-species/": {"t": "Invasive species", "s": "Introduced species that cause ecological or economic harm."}, "https://codexery.com/cooking/e/cooking-techniques/poaching/": {"t": "Poaching", "s": "Illegal hunting, capturing, or harvesting of wild animals and plants."}, "https://codexery.com/ecology-and-behavior/e/ecology-and-behavior/primary-production/": {"t": "Primary production", "s": "Primary production fuels nearly all life on Earth.", "i": "https://codexery.com/ecology-and-behavior/img/ecology-and-behavior/primary-production.webp", "c": "M.E.M.Walton, I.Al-Maslamani, M.Chatting, D.Smyth, A.Castillo, M.W.Skov and L.Le · CC BY-SA 4.0"}, "https://codexery.com/microbiology-and-cell-biology/e/microbiology-and-cell-biology/microorganism/": {"t": "Microorganism", "s": "Microscopic organisms that shape life, health, and history."}, "https://codexery.com/spiral-galaxies/e/spiral-galaxies/milky-way/": {"t": "Milky Way", "s": "The barred spiral galaxy containing the Solar System."}, "https://codexery.com/stars-of-serpens/e/stars-of-serpens/gliese-710/": {"t": "Gliese 710", "s": "A star predicted to make a close pass by the Sun."}, "https://codexery.com/astronomy-space/e/astronomy-and-space/oort-cloud/": {"t": "Oort cloud", "s": "Theorized reservoir of icy bodies at the Solar System's edge."}, "https://codexery.com/space-probes-of-esa-japan-china-india/e/space-probes-of-esa-japan-china-india-and-the-ussr/gaia-spacecraft/": {"t": "Gaia (spacecraft)", "s": "ESA astrometry mission mapping a billion stars."}, "https://codexery.com/plant-biology/e/plant-biology/photosynthesis/": {"t": "Photosynthesis", "s": "The process by which plants and other organisms convert light into chemical energy."}, "https://codexery.com/orbits-and-celestial-mechanics/e/orbits-and-celestial-mechanics/earth-s-orbit/": {"t": "Earth's orbit", "s": "Earth's elliptical orbit around the Sun defines the year and seasons."}, "https://codexery.com/orbits-and-celestial-mechanics/e/orbits-and-celestial-mechanics/orbital-inclination/": {"t": "Orbital inclination", "s": "Angle measuring tilt of an orbit relative to a reference plane."}, "https://codexery.com/geology/e/geology/ice-age/": {"t": "Ice age", "s": "A period of prolonged cooling leading to expansion of glaciers and ice caps.", "i": "https://codexery.com/geology/img/geology/ice-age.webp", "c": "Druyts.t · CC BY-SA 4.0"}, "https://codexery.com/transportation/e/transportation/fossil-fuel/": {"t": "Fossil fuel", "s": "Non-renewable energy source formed from prehistoric organic matter."}, "https://codexery.com/notable-mountains-and-peaks/e/notable-mountains-and-peaks/vesuvius/": {"t": "Vesuvius", "s": "Active volcano that destroyed Pompeii in 79 AD."}, "https://codexery.com/other-geographic-features/e/other-geographic-features/niagara-falls/": {"t": "Niagara Falls", "s": "Thundering waters at the border of Canada and the United States.", "i": "https://codexery.com/other-geographic-features/img/other-geographic-features/niagara-falls.webp", "c": "via Wikipedia: Niagara Falls · see source"}, "https://codexery.com/volcanology/e/volcanology/supervolcano/": {"t": "Supervolcano", "s": "A volcano with a VEI-8 eruption exceeding 1,000 cubic kilometers.", "i": "https://codexery.com/volcanology/img/volcanology/supervolcano.webp", "c": "O.V.E.R.V.I.E.W. · CC BY 2.0"}, "https://codexery.com/rivers-and-seas-of-the-world/e/rivers-and-seas-of-the-world/baltic-sea/": {"t": "Baltic Sea", "s": "The world's largest brackish water basin, an arm of the Atlantic enclosed by nine countries.", "i": "https://codexery.com/rivers-and-seas-of-the-world/img/rivers-and-seas-of-the-world/baltic-sea.webp", "c": "via Wikipedia: White Sea–Baltic Canal · see source"}, "https://codexery.com/seas-and-oceans/e/seas-and-oceans/hudson-bay/": {"t": "Hudson Bay", "s": "A vast inland marginal sea of the Arctic Ocean in northeastern Canada."}, "https://codexery.com/islands-and-archipelagos/e/islands-and-archipelagos/hawaii/": {"t": "Hawaii", "s": "Island state with a tropical climate and diverse heritage."}, "https://codexery.com/particle-and-nuclear-physics/e/particle-and-nuclear-physics/nuclear-fusion/": {"t": "Nuclear fusion", "s": "Nuclear fusion combines nuclei, releasing energy that powers stars and weapons."}, "https://codexery.com/astronomy-space/e/astronomy-and-space/main-sequence/": {"t": "Main sequence", "s": "Stars spend most of their lives on the main sequence."}, "https://codexery.com/astronomy-space/e/astronomy-and-space/luminosity/": {"t": "Luminosity", "s": "Absolute measure of radiated electromagnetic energy per unit time."}, "https://codexery.com/lines-hemispheres/e/lines-and-hemispheres/longitude/": {"t": "Longitude", "s": "The east-west coordinate that, with latitude, pinpoints any location on Earth.", "i": "https://codexery.com/lines-hemispheres/img/lines-and-hemispheres/longitude.webp", "c": "Original:  Pearson Scott Forman Vector:  Gregors · via Wikipedia: Longitude · CC BY-SA 3.0"}, "https://codexery.com/geology/e/geology/geodesy/": {"t": "Geodesy", "s": "Science of measuring Earth's geometry, gravity, and spatial orientation."}, "https://codexery.com/lines-hemispheres/e/lines-and-hemispheres/180th-meridian/": {"t": "180th meridian", "s": "The 180th meridian divides hemispheres and anchors the International Date Line."}, "https://codexery.com/lines-hemispheres/e/lines-and-hemispheres/circle-of-latitude/": {"t": "Circle of latitude", "s": "Parallel circles defining latitude on Earth."}, "https://codexery.com/maps-their-symbols/e/maps-and-their-symbols/map-projection/": {"t": "Map projection", "s": "Mathematical transformation of a globe's surface onto a plane."}, "https://codexery.com/maps-their-symbols/e/maps-and-their-symbols/cartography/": {"t": "Cartography", "s": "The art and science of making and using maps."}, "https://codexery.com/geometry-and-shapes/e/geometry-and-shapes/triangle-inequality/": {"t": "Triangle inequality", "s": "A fundamental theorem on triangle side lengths."}, "https://codexery.com/astronomers-and-cosmologists/e/astronomers-and-cosmologists/friedrich-wilhelm-bessel/": {"t": "Friedrich Wilhelm Bessel", "s": "German astronomer who first measured the distance to a star.", "i": "https://codexery.com/astronomers-and-cosmologists/img/astronomers-and-cosmologists/friedrich-wilhelm-bessel.webp", "c": "Christian Albrecht Jensen · via Wikipedia: Friedrich Wilhelm Bessel · Public domain"}, "https://codexery.com/lines-hemispheres/e/lines-and-hemispheres/latitude/": {"t": "Latitude", "s": "Latitude specifies north-south position on Earth or celestial bodies.", "i": "https://codexery.com/lines-hemispheres/img/lines-and-hemispheres/latitude.webp", "c": "source: Pearson Scott Foresman, donated to the Wikimedia Foundation\nsvg conversion: Gregors\nColor: Jahobr · via Wikipedia: Latitude · Public domain"}, "https://codexery.com/classical-and-fluid-mechanics/e/classical-and-fluid-mechanics/net-force/": {"t": "Net force", "s": "Net force is the vector sum of all forces on an object."}, "https://codexery.com/classical-mechanics/e/classical-mechanics/gravity/": {"t": "Gravity", "s": "Gravity is the fundamental attraction between objects with mass.", "i": "https://codexery.com/classical-mechanics/img/classical-mechanics/gravity.webp", "c": "https://commons.wikimedia.org/wiki/User:Nicoguaro · CC BY-SA 3.0"}, "https://codexery.com/units-measurement/e/units-and-measurement/international-system-of-units/": {"t": "International System of Units", "s": "The modern metric system used worldwide for measurement."}, "https://codexery.com/classical-mechanics/e/classical-mechanics/drag-physics/": {"t": "Drag (physics)", "s": "A force opposing motion through a fluid, dependent on velocity.", "i": "https://codexery.com/classical-mechanics/img/classical-mechanics/drag-physics.webp", "c": "Nubifer // Wiki LIC (Spanish translation) · CC0"}, "https://codexery.com/mechanics-and-fluid-dynamics/e/mechanics-and-fluid-dynamics/free-fall/": {"t": "Free fall", "s": "Motion under only gravity, producing uniform acceleration and weightlessness."}, "https://codexery.com/classical-mechanics-and-dynamics/e/classical-mechanics-and-dynamics/newton-s-laws-of-motion/": {"t": "Newton's laws of motion", "s": "Three laws describing motion and force relationships."}, "https://codexery.com/cities/e/capitals/mexico-city/": {"t": "Mexico City", "s": "La Ciudad de los Palacios"}, "https://codexery.com/cities/e/coastal/singapore/": {"t": "Singapore", "s": "The Lion City, a global hub of trade and finance."}, "https://codexery.com/space-missions/e/space-missions/the-international-space-station/": {"t": "The International Space Station", "s": "The International Space Station (ISS) is a modular spacecraft in low Earth orbit, assembled and operated by five partner agencies: NASA, Roscosmos, ESA, JAXA, a"}, "https://codexery.com/relativity-and-gravitation/e/relativity-and-gravitation/gravitational-constant/": {"t": "Gravitational constant", "s": "Fundamental constant quantifying gravitational force strength.", "i": "https://codexery.com/relativity-and-gravitation/img/relativity-and-gravitation/gravitational-constant.webp", "c": "National Institute of Standards and Technology · Public domain"}, "https://codexery.com/classical-mechanics-and-dynamics/e/classical-mechanics-and-dynamics/newton-s-law-of-universal-gravitation/": {"t": "Newton's law of universal gravitation", "s": "Gravity as a universal force between all masses."}, "https://codexery.com/geology/e/geology/cretaceous/": {"t": "Cretaceous", "s": "The longest geological period, marked by warm climates, dinosaurs, and the rise of flowering plants, ending with a mass extinction.", "i": "https://codexery.com/geology/img/geology/cretaceous.webp", "c": "James St. John · CC BY 2.0"}, "https://codexery.com/phantom-places-discovery/e/phantom-places-and-discovery/polar-regions/": {"t": "Polar regions", "s": "Earth's frigid zones around the North and South Poles."}, "https://codexery.com/straits-and-channels/e/straits-and-channels/drake-passage/": {"t": "Drake Passage", "s": "The treacherous passage between Cape Horn and Antarctica, where the world's mightiest current flows unimpeded."}, "https://codexery.com/regions-cultural-spheres/e/regions-and-cultural-spheres/antarctica/": {"t": "Antarctica", "s": "Earth's southernmost, coldest, and least-populated continent."}, "https://codexery.com/peninsulas-and-isthmuses/e/peninsulas-and-isthmuses/isthmus-of-panama/": {"t": "Isthmus of Panama", "s": "Narrow land bridge linking North and South America."}, "https://codexery.com/regions-cultural-spheres/e/regions-and-cultural-spheres/indian-subcontinent/": {"t": "Indian subcontinent", "s": "A physiographic region below the Himalayas, divided into three nations."}, "https://codexery.com/plateaus-and-plains/e/plateaus-and-plains/tibetan-plateau/": {"t": "Tibetan Plateau", "s": "Largest and highest plateau in the world, sometimes called the 'Roof of the World'.", "i": "https://codexery.com/plateaus-and-plains/img/plateaus-and-plains/tibetan-plateau.webp", "c": "via Wikipedia: Plateau · see source"}, "https://codexery.com/astronomy-space/e/astronomy-and-space/orbit/": {"t": "Orbit", "s": "Curved trajectory of an object under an attracting force."}, "https://codexery.com/structural-geology-and-tectonics/e/structural-geology-and-tectonics/tethys-ocean/": {"t": "Tethys Ocean", "s": "Prehistoric ocean that fragmented into the Indian Ocean and Mediterranean."}, "https://codexery.com/geology/e/geology/geologic-time-scale/": {"t": "Geologic time scale", "s": "Standardised intervals of Earth's 4.54 ± 0.05 billion-year history, defined by rock layers and radiometric dating."}, "https://codexery.com/cosmology-concepts/e/cosmology-concepts/age-of-the-universe/": {"t": "Age of the universe", "s": "Age of the universe is 13.8 billion years."}, "https://codexery.com/biochemistry-and-cell-biology/e/biochemistry-and-cell-biology/abiogenesis/": {"t": "Abiogenesis", "s": "Natural process by which life arises from non-living matter."}, "https://codexery.com/taxonomy-evolution/e/taxonomy-and-evolution/earliest-known-life-forms/": {"t": "Earliest known life forms", "s": "Earliest known life forms: at least 3.5 billion years old, with possible traces back to 4.1 billion years."}, "https://codexery.com/fossils/e/fossils/microbial-mat/": {"t": "Microbial mat", "s": "Multi-layered biofilms that shaped Earth's early ecosystems."}, "https://codexery.com/microbial-groups-and-extremophiles/e/microbial-groups-and-extremophiles/stromatolite/": {"t": "Stromatolite", "s": "Layered microbial formations recording ancient life on Earth.", "i": "https://codexery.com/microbial-groups-and-extremophiles/img/microbial-groups-and-extremophiles/stromatolite.webp", "c": "Animalculum · CC BY 4.0"}, "https://codexery.com/geology-earth-surface/e/geology-and-earth-surface/sandstone/": {"t": "Sandstone", "s": "Clastic sedimentary rock composed mainly of sand-sized silicate grains.", "i": "https://codexery.com/geology-earth-surface/img/geology-and-earth-surface/sandstone.webp", "c": "Douglas W. Jones · CC0"}, "https://codexery.com/chemistry/e/chemistry/graphite/": {"t": "Graphite", "s": "A crystalline carbon allotrope used in refractories, batteries, and lubricants.", "i": "https://codexery.com/chemistry/img/chemistry/graphite.webp", "c": "D.S. Soriano · CC BY-SA 4.0"}, "https://codexery.com/cosmology-concepts/e/cosmology-concepts/universe/": {"t": "Universe", "s": "The totality of all space, time, matter, and energy."}, "https://codexery.com/biology-concepts/e/biology-concepts/life/": {"t": "Life", "s": "Life is a self-sustained process in matter, characterized by organization, metabolism, growth, adaptation, response to stimuli, and reproduction, ending in deat"}, "https://codexery.com/geology/e/geology/geochronology/": {"t": "Geochronology", "s": "Science of dating rocks, fossils, and sediments using inherent signatures."}, "https://codexery.com/astronomy-space/e/astronomy-and-space/nebular-hypothesis/": {"t": "Nebular hypothesis", "s": "Model explaining Solar System formation from gas and dust."}, "https://codexery.com/cosmology-concepts/e/cosmology-concepts/recombination-cosmology/": {"t": "Recombination (cosmology)", "s": "Epoch when electrons and protons first formed neutral hydrogen atoms."}, "https://codexery.com/classical-mechanics/e/classical-mechanics/inertia/": {"t": "Inertia", "s": "Objects persist in motion or rest unless compelled by force.", "i": "https://codexery.com/classical-mechanics/img/classical-mechanics/inertia.webp", "c": "Janusz88pl · CC BY-SA 4.0"}, "https://codexery.com/binary-and-multiple-stars/e/binary-and-multiple-stars/accretion-disk/": {"t": "Accretion disk", "s": "Accretion disks are ubiquitous structures that drive mass onto central objects."}, "https://codexery.com/inorganic-compounds-materials/e/inorganic-compounds-and-materials/hydrogen-sulfide/": {"t": "Hydrogen sulfide", "s": "Colorless, toxic gas with a rotten-egg odor.", "i": "https://codexery.com/inorganic-compounds-materials/img/inorganic-compounds-and-materials/hydrogen-sulfide.webp", "c": "Jynto ( talk ) · CC0"}, "https://codexery.com/microbial-groups-and-extremophiles/e/microbial-groups-and-extremophiles/prokaryote/": {"t": "Prokaryote", "s": "Single-celled organisms without a nucleus, foundational to life on Earth.", "i": "https://codexery.com/microbial-groups-and-extremophiles/img/microbial-groups-and-extremophiles/prokaryote.webp", "c": "Mariana Ruiz Villarreal, LadyofHats translated in gujarati by User:Sushant_savla · CC0"}, "https://codexery.com/eukaryote-groups-and-taxonomy/e/eukaryote-groups-and-taxonomy/eukaryote/": {"t": "Eukaryote", "s": "Cellular organisms with a membrane-bound nucleus and organelles, including animals, plants, fungi, and protists."}, "https://codexery.com/brewing-processes/e/brewing-processes/fermentation/": {"t": "Fermentation", "s": "Anaerobic metabolism using organic compounds as both electron donor and acceptor."}, "https://codexery.com/extinct-archosaurs/e/extinct-archosaurs/dinosaur/": {"t": "Dinosaur", "s": "Dinosaurs are a diverse group of warmblooded reptiles of the clade Dinosauria."}, "https://codexery.com/ancient-greek-astronomy/e/ancient-greek-astronomy/geocentrism/": {"t": "Geocentrism", "s": "Earth-centered model of the cosmos, dominant for over 1,500 years."}, "https://codexery.com/planets-and-dwarf-planets/e/planets-and-dwarf-planets/classical-planet/": {"t": "Classical planet", "s": "Seven naked-eye wanderers known since antiquity."}, "https://codexery.com/astronomers-and-astrophysicists/e/astronomers-and-astrophysicists/william-herschel/": {"t": "William Herschel", "s": "Discoverer of Uranus and infrared radiation", "i": "https://codexery.com/astronomers-and-astrophysicists/img/astronomers-and-astrophysicists/william-herschel.webp", "c": "Lemuel Francis Abbott · via Wikipedia: William Herschel · Public domain"}, "https://codexery.com/cosmology-concepts/e/cosmology-concepts/expansion-of-the-universe/": {"t": "Expansion of the universe", "s": "The increase in distance between gravitationally unbound parts of the universe."}, "https://codexery.com/galaxy-clusters-and-groups/e/galaxy-clusters-and-groups/supercluster/": {"t": "Supercluster", "s": "Superclusters are among the largest known structures in the universe."}, "https://codexery.com/astronomy-space/e/astronomy-and-space/observable-universe/": {"t": "Observable universe", "s": "The portion of the universe visible from Earth."}, "https://codexery.com/cosmology-concepts/e/cosmology-concepts/multiverse/": {"t": "Multiverse", "s": "Hypothetical set of all universes, debated in science and philosophy."}, "https://codexery.com/science-measurement/e/science-and-measurement/microscope/": {"t": "Microscope", "s": "Instrument for viewing objects invisible to the naked eye.", "i": "https://codexery.com/science-measurement/img/science-and-measurement/microscope.webp", "c": "Chad Anderson, staff photographer for SFO Museum · CC BY-SA 2.0"}, "https://codexery.com/u-s-states/e/u-s-states/vermont/": {"t": "Vermont", "s": "Second-least populated U.S. state, known for progressivism and maple syrup."}, "https://codexery.com/phantom-places-discovery/e/phantom-places-and-discovery/remote-sensing/": {"t": "Remote sensing", "s": "Acquiring information about objects without physical contact."}, "https://codexery.com/authors-poets/e/authors-and-poets/lewis-carroll/": {"t": "Lewis Carroll", "s": "English author, poet, mathematician, photographer, and Anglican deacon known for Alice's Adventures in Wonderland and literary nonsense."}, "https://codexery.com/danish-inventions/e/danish-inventions/google-maps/": {"t": "Google Maps", "s": "Web mapping platform launched by Google in 2005."}, "https://codexery.com/corporations/e/corporations/microsoft/": {"t": "Microsoft", "s": "The largest software company by revenue and one of the most valuable brands globally.", "i": "https://codexery.com/corporations/img/corporations/microsoft.webp", "c": "3aFW · CC0"}, "https://codexery.com/communication-and-media/e/communication-and-media/web-browser/": {"t": "Web browser", "s": "Application for accessing and displaying websites."}, "https://codexery.com/traditional-knowledge/e/traditional-knowledge/convention-on-biological-diversity/": {"t": "Convention on Biological Diversity", "s": "Multilateral treaty for biodiversity conservation and sustainable use."}, "https://codexery.com/historical-figures/e/notable/buckminster-fuller/": {"t": "Buckminster Fuller", "s": "Inventor of the geodesic dome and second World President of Mensa International."}, "https://codexery.com/science-measurement/e/science-and-measurement/optical-microscope/": {"t": "Optical microscope", "s": "Uses visible light and lenses to magnify small objects.", "i": "https://codexery.com/science-measurement/img/science-and-measurement/optical-microscope.webp", "c": "Unknown author · Public domain"}, "https://codexery.com/geology/e/geology/earth-s-mantle/": {"t": "Earth's mantle", "s": "Silicate layer between crust and outer core, driving plate tectonics."}, "https://codexery.com/chemical-elements/e/chemical-elements/vanadium/": {"t": "Vanadium", "s": "The colorful transition metal named after a Norse goddess."}, "https://codexery.com/chemistry/e/chemistry/europium/": {"t": "Europium", "s": "Rare-earth element known for phosphorescence and divalent chemistry."}, "https://codexery.com/thermodynamics-and-statistical-mechanics/e/thermodynamics-and-statistical-mechanics/temperature/": {"t": "Temperature", "s": "Temperature measures average particle kinetic energy and thermal energy distribution."}, "https://codexery.com/minerals-crystals/e/minerals-and-crystals/spinel/": {"t": "Spinel", "s": "A gemstone mineral often mistaken for ruby."}, "https://codexery.com/chemistry-fundamentals/e/chemistry-fundamentals/chemical-equilibrium/": {"t": "Chemical equilibrium", "s": "State where forward and reverse reaction rates are equal."}, "https://codexery.com/geology-earth-science/e/geology-and-earth-science/internal-structure-of-earth/": {"t": "Internal structure of Earth", "s": "Earth's interior is layered by chemistry and mechanical behavior."}, "https://codexery.com/classical-mechanics/e/classical-mechanics/mass/": {"t": "Mass", "s": "Intrinsic property measuring inertia and gravitational attraction."}, "https://codexery.com/astronomy/e/astronomy/exoplanet/": {"t": "Exoplanet", "s": "An exoplanet, also called an extrasolar planet, is any planet that exists beyond our Solar System.", "i": "https://codexery.com/astronomy/img/astronomy/exoplanet.webp", "c": "European Space Agency · CC BY-SA 3.0 igo"}, "https://codexery.com/geology/e/geology/earth-s-inner-core/": {"t": "Earth's inner core", "s": "Earth's innermost layer: a solid iron-nickel ball under extreme pressure and temperature, revealed by seismic waves.", "i": "https://codexery.com/geology/img/geology/earth-s-inner-core.webp", "c": "Edgar Rice Burroughs · Public domain"}, "https://codexery.com/chemistry-fundamentals/e/chemistry-fundamentals/chemical-element/": {"t": "Chemical element", "s": "Fundamental species of atom defined by proton count."}, "/e/earth/figure-of-the-earth/": {"t": "Figure of the Earth", "s": "Models of Earth's size and shape for geodesy."}, "https://codexery.com/astronomy-space/e/astronomy-and-space/minor-planet/": {"t": "Minor planet", "s": "A Sun-orbiting body that is neither a planet nor a comet."}, "https://codexery.com/planets-and-dwarf-planets/e/planets-and-dwarf-planets/ceres-dwarf-planet/": {"t": "Ceres (dwarf planet)", "s": "Dwarf planet in the main asteroid belt, first discovered asteroid."}, "https://codexery.com/notable-mountains-and-peaks/e/notable-mountains-and-peaks/chimborazo/": {"t": "Chimborazo", "s": "Ecuador's highest peak and farthest point from Earth's center."}, "https://codexery.com/english-counties/e/english-counties/yorkshire/": {"t": "Yorkshire", "s": "God's own country"}, "https://codexery.com/english-counties/e/english-counties/cumberland/": {"t": "Cumberland", "s": "Historic county in North West England; a unitary authority area of the same name was created in 2023."}, "https://codexery.com/particle-and-nuclear-physics/e/particle-and-nuclear-physics/nuclear-fission/": {"t": "Nuclear fission", "s": "Nuclear fission splits atomic nuclei, releasing vast energy."}, "https://codexery.com/human-evolution/e/human-evolution/human-evolution/": {"t": "Human evolution", "s": "Human evolution is a weblike process studied across multiple scientific disciplines."}, "https://codexery.com/rules-of-thumb/e/rules-of-thumb/heuristic/": {"t": "Heuristic", "s": "A mental shortcut for satisfactory, not optimal, solutions."}, "https://codexery.com/mathematicians/e/mathematicians/james-gregory-mathematician/": {"t": "James Gregory (mathematician)", "s": "Scottish mathematician and astronomer, inventor of the Gregorian telescope and pioneer of calculus.", "i": "https://codexery.com/mathematicians/img/mathematicians/james-gregory-mathematician.webp", "c": "Gregory, James · Public domain"}, "https://codexery.com/stars-of-canis-major/e/stars-of-canis-major/sirius/": {"t": "Sirius", "s": "The brightest star in Earth's night sky."}, "https://codexery.com/cosmology-concepts/e/cosmology-concepts/anthropic-principle/": {"t": "Anthropic principle", "s": "Observable universe must allow observers to exist."}, "/e/earth/rare-earth-hypothesis/": {"t": "Rare Earth hypothesis", "s": "Hypothesis that complex life is rare in the universe."}, "https://codexery.com/human-variation-and-health/e/human-variation-and-health/life-expectancy/": {"t": "Life expectancy", "s": "A statistical measure of average remaining years of life at a given age, most commonly at birth.", "i": "https://codexery.com/human-variation-and-health/img/human-variation-and-health/life-expectancy.webp", "c": "Lady3mlnm · CC0"}, "https://codexery.com/cosmic-mysteries/e/cosmic-mysteries/dark-matter/": {"t": "Dark matter", "s": "Invisible matter inferred from gravitational effects on cosmic scales."}, "https://codexery.com/biologists-naturalists/e/biologists-and-naturalists/richard-dawkins/": {"t": "Richard Dawkins", "s": "Evolutionary biologist and prominent atheist author.", "i": "https://codexery.com/biologists-naturalists/img/biologists-and-naturalists/richard-dawkins.webp", "c": "Steve Jurvetson · via Wikipedia: Richard Dawkins · CC BY 2.0"}, "https://codexery.com/particle-and-nuclear-physics/e/particle-and-nuclear-physics/neutrino/": {"t": "Neutrino", "s": "An elusive elementary particle that rarely interacts with matter."}, "https://codexery.com/animal-behavior/e/animal-behavior/beaver-dam/": {"t": "Beaver dam", "s": "Beaver dams create ponds that protect beavers and reshape ecosystems."}, "https://codexery.com/geology-earth-surface/e/geology-and-earth-surface/rock-geology/": {"t": "Rock (geology)", "s": "Naturally occurring solid aggregate of minerals or mineraloid matter.", "i": "https://codexery.com/geology-earth-surface/img/geology-and-earth-surface/rock-geology.webp", "c": "Adrian Diack · CC BY-SA 2.0"}, "https://codexery.com/geology-earth-surface/e/geology-and-earth-surface/soil/": {"t": "Soil", "s": "Soil is a complex ecosystem supporting life and regulating Earth's cycles."}, "https://codexery.com/geology-and-landforms/e/geology-and-landforms/body-of-water/": {"t": "Body of water", "s": "Accumulated water on Earth's surface, natural or artificial."}, "https://codexery.com/geology/e/geology/floodplain/": {"t": "Floodplain", "s": "Floodplains are fertile, flood-prone river-adjacent lands."}, "https://codexery.com/meteorology/e/meteorology/water-vapor/": {"t": "Water vapor", "s": "The gaseous phase of water, a key greenhouse gas and component of Earth's hydrosphere."}, "https://codexery.com/electromagnetism-and-radiation/e/electromagnetism-and-radiation/ultraviolet/": {"t": "Ultraviolet", "s": "Electromagnetic radiation beyond violet, with both harmful and beneficial effects."}, "https://codexery.com/meteorology/e/meteorology/weather/": {"t": "Weather", "s": "Weather is the state of the Earth's atmosphere at a specific place and time, driven by air pressure, temperature, and moisture differences."}, "https://codexery.com/games-and-recreation/e/games-and-recreation/recreation/": {"t": "Recreation", "s": "Recreation is essential leisure activity for human well-being."}, "https://codexery.com/philosophical-concepts/e/philosophical-concepts/aesthetics/": {"t": "Aesthetics", "s": "Branch of philosophy studying beauty, art, and taste.", "i": "https://codexery.com/philosophical-concepts/img/philosophical-concepts/aesthetics.webp", "c": "Ewan-M · CC BY-SA 4.0"}, "https://codexery.com/languages-and-writing-systems/e/languages-and-writing-systems/old-english/": {"t": "Old English", "s": "Earliest attested form of the English language."}, "https://codexery.com/seas-and-oceans/e/seas-and-oceans/southern-ocean/": {"t": "Southern Ocean", "s": "Southernmost ocean encircling Antarctica, defined by circulation and latitude."}, "https://codexery.com/coastal-marine-geology/e/coastal-and-marine-geology/sea-ice/": {"t": "Sea ice", "s": "Frozen seawater that shapes climate, navigation, and polar ecosystems."}, "https://codexery.com/thermodynamics-and-statistical-mechanics/e/thermodynamics-and-statistical-mechanics/heat-capacity/": {"t": "Heat capacity", "s": "Heat capacity measures heat needed to change an object's temperature."}, "https://codexery.com/units-measurement/e/units-and-measurement/joule/": {"t": "Joule", "s": "English physicist whose work led to the SI unit of energy."}, "https://codexery.com/classical-and-continuum-mechanics/e/classical-and-continuum-mechanics/turbulence/": {"t": "Turbulence", "s": "Chaotic fluid motion with vortices, mixing, and unresolved physics."}, "https://codexery.com/materials-and-states-of-matter/e/materials-and-states-of-matter/evaporation/": {"t": "Evaporation", "s": "Surface vaporization process driven by heat and molecular kinetics."}, "https://codexery.com/meteorology/e/meteorology/tropical-cyclone/": {"t": "Tropical cyclone", "s": "A rapidly rotating storm system with a low-pressure area, strong winds, and spiral thunderstorms.", "i": "https://codexery.com/meteorology/img/meteorology/tropical-cyclone.webp", "c": "Vyacheslav Argenberg · CC BY 4.0"}, "https://codexery.com/computer-cooling-and-sound-cards/e/computer-cooling-and-sound-cards/heat-sink/": {"t": "Heat sink", "s": "A passive heat exchanger that dissipates heat from electronic devices."}, "https://codexery.com/coral-reefs/e/coral-reefs/coral-bleaching/": {"t": "Coral bleaching", "s": "Coral bleaching is the loss of symbiotic algae causing coral whitening and stress."}, "https://codexery.com/notable-asteroids/e/notable-asteroids/asteroid-belt/": {"t": "Asteroid belt", "s": "A torus-shaped region between Mars and Jupiter containing many asteroids."}, "https://codexery.com/chemistry-materials/e/chemistry-and-materials/noble-gas/": {"t": "Noble gas", "s": "Group 18 elements with full valence shells and low reactivity."}, "https://codexery.com/materials-and-states-of-matter/e/materials-and-states-of-matter/melting/": {"t": "Melting", "s": "Phase transition from solid to liquid at the melting point."}, "https://codexery.com/successful-space-missions/e/successful-space-missions/apollo-15/": {"t": "Apollo 15", "s": "First J mission with rover, deep-space spacewalk, and Genesis Rock.", "i": "https://codexery.com/successful-space-missions/img/successful-space-missions/apollo-15.webp", "c": "NASA · Public domain"}, "https://codexery.com/successful-space-missions/e/successful-space-missions/apollo-17/": {"t": "Apollo 17", "s": "Final Apollo Moon landing, with the only geologist to walk on the Moon.", "i": "https://codexery.com/successful-space-missions/img/successful-space-missions/apollo-17.webp", "c": "NASA on The Commons · Public domain"}, "https://codexery.com/planets-and-dwarf-planets/e/planets-and-dwarf-planets/jupiter/": {"t": "Jupiter", "s": "Largest planet in the Solar System, a gas giant with a Great Red Spot."}, "https://codexery.com/chemistry-materials/e/chemistry-and-materials/molybdenum/": {"t": "Molybdenum", "s": "Molybdenum is a transition metal essential for life and industry."}, "https://codexery.com/sample-return-missions/e/sample-return-missions/hayabusa/": {"t": "Hayabusa", "s": "First asteroid sample return mission"}, "https://codexery.com/astronomy-space/e/astronomy-and-space/kuiper-belt/": {"t": "Kuiper belt", "s": "A circumstellar disc of icy bodies beyond Neptune."}, "https://codexery.com/orbits-and-celestial-mechanics/e/orbits-and-celestial-mechanics/libration/": {"t": "Libration", "s": "Cyclic variation in Moon's apparent position revealing extra lunar surface."}, "https://codexery.com/ecology-and-behavior/e/ecology-and-behavior/sustainability/": {"t": "Sustainability", "s": "Ability to continue over a long period of time."}, "https://codexery.com/media-and-publishing/e/media-and-publishing/nature-journal/": {"t": "Nature (journal)", "s": "British weekly journal of peer-reviewed natural science research.", "i": "https://codexery.com/media-and-publishing/img/media-and-publishing/nature-journal.webp", "c": "ESO/M. Kornmesser (photo displayed on the magazine cover) · via Wikipedia: Nature (journal) · CC BY 4.0"}, "https://codexery.com/organizations-associated-with-the/e/organizations-associated-with-the-covid-19-pandemic/world-health-organization/": {"t": "World Health Organization", "s": "UN agency coordinating global health responses and standards."}, "https://codexery.com/philosophical-concepts/e/philosophical-concepts/hypothesis/": {"t": "Hypothesis", "s": "A proposed explanation requiring testable and reproducible prediction."}, "https://codexery.com/cell-and-molecular-biology/e/cell-and-molecular-biology/molecular-biology/": {"t": "Molecular biology", "s": "Study of molecular structures and processes in cells."}, "https://codexery.com/biochemistry-and-cell-biology/e/biochemistry-and-cell-biology/chlorophyll/": {"t": "Chlorophyll", "s": "Green pigments that absorb light for oxygenic photosynthesis."}, "https://codexery.com/animal-anatomy/e/animal-anatomy/cell-membrane/": {"t": "Cell membrane", "s": "Semipermeable lipid bilayer separating cell interior from environment.", "i": "https://codexery.com/animal-anatomy/img/animal-anatomy/cell-membrane.webp", "c": "Blackout Sea · CC0"}, "https://codexery.com/electromagnetism-and-radiation/e/electromagnetism-and-radiation/visible-spectrum/": {"t": "Visible spectrum", "s": "The range of electromagnetic radiation visible to the human eye."}, "https://codexery.com/higher-level-taxonomy-evolution/e/higher-level-taxonomy-and-evolution/cyanobacteria/": {"t": "Cyanobacteria", "s": "Ancient photosynthetic bacteria that oxygenated Earth's atmosphere.", "i": "https://codexery.com/higher-level-taxonomy-evolution/img/higher-level-taxonomy-and-evolution/cyanobacteria.webp", "c": "Lamiot · CC BY-SA 3.0"}, "https://codexery.com/plant-families-taxonomy/e/plant-families-and-taxonomy/green-algae/": {"t": "Green algae", "s": "Green algae are the photosynthetic ancestors of all land plants."}, "https://codexery.com/cell-and-molecular-biology/e/cell-and-molecular-biology/organelle/": {"t": "Organelle", "s": "Specialized subunit within a cell with a specific function"}, "https://codexery.com/chemistry-fundamentals/e/chemistry-fundamentals/chemical-compound/": {"t": "Chemical compound", "s": "Substance of multiple elements bonded in fixed proportions."}, "https://codexery.com/microbial-groups-and-extremophiles/e/microbial-groups-and-extremophiles/pseudomonadota/": {"t": "Pseudomonadota", "s": "A diverse phylum of gram-negative bacteria with pathogenic and free-living members."}, "https://codexery.com/animal-behavior/e/animal-behavior/symbiosis/": {"t": "Symbiosis", "s": "Close, long-term interactions between different species."}, "https://codexery.com/ecology-and-behavior/e/ecology-and-behavior/symbiogenesis/": {"t": "Symbiogenesis", "s": "Theory that eukaryotic cells arose from symbiotic mergers of prokaryotes."}, "https://codexery.com/cell-and-molecular-biology/e/cell-and-molecular-biology/mitochondria/": {"t": "Mitochondria", "s": "Double-membraned organelles that produce cellular energy as ATP."}, "https://codexery.com/astronomy/e/astronomy/extraterrestrial-life/": {"t": "Extraterrestrial life", "s": "Hypothetical life originating from worlds beyond Earth."}, "https://codexery.com/units-measurement/e/units-and-measurement/unit-of-measurement/": {"t": "Unit of measurement", "s": "Standardized quantities enabling consistent measurement across time and place."}, "https://codexery.com/international-organizations-and-agreemen/e/international-organizations-and-agreements/international-astronomical-union/": {"t": "International Astronomical Union", "s": "Global authority for astronomical naming and cooperation."}, "https://codexery.com/classical-and-continuum-mechanics/e/classical-and-continuum-mechanics/tidal-force/": {"t": "Tidal force", "s": "Differential gravity stretches bodies and drives tides across the cosmos."}, "https://codexery.com/geology/e/geology/crust-geology/": {"t": "Crust (geology)", "s": "The outermost solid shell of a planet, dwarf planet, or natural satellite.", "i": "https://codexery.com/geology/img/geology/crust-geology.webp", "c": "User:Zakapedia · CC BY-SA 3.0"}, "https://codexery.com/geometry-and-topology/e/geometry-and-topology/torus/": {"t": "Torus", "s": "A surface of revolution shaped like a doughnut."}, "https://codexery.com/lines-hemispheres/e/lines-and-hemispheres/meridian-geography/": {"t": "Meridian (geography)", "s": "A line of longitude connecting points of equal longitude."}, "https://codexery.com/geometry-and-shapes/e/geometry-and-shapes/surface-area/": {"t": "Surface area", "s": "Measure of total area of a solid object's surface."}, "https://codexery.com/historical-figures/e/notable/aristotle/": {"t": "Aristotle", "s": "Ancient Greek philosopher and polymath, founder of the Peripatetic school."}, "https://codexery.com/cosmic-mysteries/e/cosmic-mysteries/the-fermi-paradox/": {"t": "The Fermi paradox", "s": "A paradox questioning the absence of extraterrestrial evidence."}, "https://codexery.com/planets-stellar-astronomy/e/planets-and-stellar-astronomy/planetary-system/": {"t": "Planetary system", "s": "A star's family of orbiting worlds and debris."}, "https://codexery.com/spiral-galaxies/e/spiral-galaxies/barred-spiral-galaxy/": {"t": "Barred spiral galaxy", "s": "A spiral galaxy with a central bar of stars."}, "https://codexery.com/exoplanets/e/exoplanets/the-habitable-zone/": {"t": "The habitable zone", "s": "The range of orbits around a star where liquid water could exist on a planetary surface."}, "https://codexery.com/reproduction-development/e/reproduction-and-development/sexual-reproduction/": {"t": "Sexual reproduction", "s": "Sexual reproduction combines gametes to create genetically diverse offspring.", "i": "https://codexery.com/reproduction-development/img/reproduction-and-development/sexual-reproduction.webp", "c": ".mw-parser-output .messagebox{margin:4px 0;width:auto;border-collapse:collapse;b · CC BY-SA 4.0"}, "https://codexery.com/microbiology-and-immunology/e/microbiology-and-immunology/phylum/": {"t": "Phylum", "s": "A taxonomic rank below kingdom and above class."}, "https://codexery.com/astronomy-space/e/astronomy-and-space/light-year/": {"t": "Light-year", "s": "A unit of distance, not time, used for astronomical scales."}, "https://codexery.com/planets-stellar-astronomy/e/planets-and-stellar-astronomy/parsec/": {"t": "Parsec", "s": "Unit of distance defined by one arcsecond of parallax.", "i": "https://codexery.com/planets-stellar-astronomy/img/planets-and-stellar-astronomy/parsec.webp", "c": "via Wikipedia: Parsec · see source"}, "https://codexery.com/black-holes/e/black-holes/black-hole/": {"t": "Black hole", "s": "An astronomical body from which nothing, not even light, can escape.", "i": "https://codexery.com/black-holes/img/black-holes/black-hole.webp", "c": "Event Horizon Telescope, uploader cropped and converted TIF to JPG · via Wikipedia: Black hole · CC BY 4.0"}, "https://codexery.com/binary-and-multiple-stars/e/binary-and-multiple-stars/astrometric-binary/": {"t": "Astrometric binary", "s": "Some stars appear to circle an invisible point."}, "https://codexery.com/polymers-and-macromolecules/e/polymers-and-macromolecules/macromolecule/": {"t": "Macromolecule", "s": "Molecules of high relative molecular mass with repeating structural units."}, "https://codexery.com/cosmic-mysteries/e/cosmic-mysteries/the-drake-equation/": {"t": "The Drake equation", "s": "Probabilistic argument estimating communicative extraterrestrial civilizations in the Milky Way."}, "/e/earth/day-length-fluctuations/": {"t": "Day length fluctuations", "s": "Subtle variations in Earth's rotation from weeks to years."}, "https://codexery.com/astronomical-concepts-and-techniques/e/astronomical-concepts-and-techniques/sidereal-time/": {"t": "Sidereal time", "s": "Timekeeping system based on Earth's rotation relative to the fixed stars."}, "https://codexery.com/astrophotography/e/astrophotography/very-long-baseline-interferometry/": {"t": "Very-long-baseline interferometry", "s": "VLBI combines radio telescopes to emulate a giant telescope."}, "https://codexery.com/satellite-navigation-and-gps/e/satellite-navigation-and-gps/galileo-satellite-navigation-system/": {"t": "Galileo (satellite navigation system)", "s": "European Union's civilian GNSS providing independent high-precision positioning."}, "https://codexery.com/satellite-navigation-and-gps/e/satellite-navigation-and-gps/glonass/": {"t": "GLONASS", "s": "Russian satellite navigation system offering global coverage and comparable precision to GPS."}, "https://codexery.com/lines-hemispheres/e/lines-and-hemispheres/celestial-pole/": {"t": "Celestial pole", "s": "Fixed points in the sky around which all stars appear to rotate."}, "https://codexery.com/flight-instruments-and-avionics/e/flight-instruments-and-avionics/satellite-navigation/": {"t": "Satellite navigation", "s": "Satellite navigation uses satellite signals for precise positioning worldwide."}, "https://codexery.com/named-stars/e/named-stars/polaris/": {"t": "Polaris", "s": "The current northern pole star and closest Cepheid variable."}, "https://codexery.com/regions-cultural-spheres/e/regions-and-cultural-spheres/northern-hemisphere/": {"t": "Northern Hemisphere", "s": "Northern Hemisphere: most populous, land-rich half of Earth.", "i": "https://codexery.com/regions-cultural-spheres/img/regions-and-cultural-spheres/northern-hemisphere.webp", "c": "via Wikipedia: Northern Hemisphere · see source"}, "https://codexery.com/geology/e/geology/earth-s-outer-core/": {"t": "Earth's outer core", "s": "Liquid layer generating Earth's magnetic field via convection."}, "https://codexery.com/philosophers-thinkers/e/philosophers-and-thinkers/philolaus/": {"t": "Philolaus", "s": "Pythagorean philosopher who first wrote of a Central Fire universe."}, "https://codexery.com/ancient-greek-astronomy/e/ancient-greek-astronomy/counter-earth/": {"t": "Counter-Earth", "s": "Hypothetical planet opposite Earth, proposed by Philolaus."}, "https://codexery.com/astronomers-and-cosmologists/e/astronomers-and-cosmologists/aristarchus-of-samos/": {"t": "Aristarchus of Samos", "s": "Ancient Greek astronomer who first proposed a Sun-centered universe."}, "https://codexery.com/ancient-greek-astronomy/e/ancient-greek-astronomy/heliocentrism/": {"t": "Heliocentrism", "s": "Superseded model placing Sun at universe's center."}, "https://codexery.com/scientists-and-mathematicians/e/scientists-and-mathematicians/aryabhata/": {"t": "Aryabhata", "s": "First major mathematician-astronomer of classical Indian science."}, "https://codexery.com/greek-inventions/e/greek-inventions/astrolabe/": {"t": "Astrolabe", "s": "Ancient astronomical instrument used as a star chart and analog calculator."}, "https://codexery.com/iranian-inventions/e/iranian-inventions/maragheh-observatory/": {"t": "Maragheh observatory", "s": "A 13th-century Persian observatory and scientific center."}, "https://codexery.com/philosophers-and-theologians/e/philosophers-and-theologians/nasir-al-din-al-tusi/": {"t": "Nasir al-Din al-Tusi", "s": "Persian polymath who advanced astronomy and trigonometry.", "i": "https://codexery.com/philosophers-and-theologians/img/philosophers-and-theologians/nasir-al-din-al-tusi.webp", "c": "via Wikipedia: Nasir al-Din al-Tusi · see source"}, "https://codexery.com/scientists-and-mathematicians/e/scientists-and-mathematicians/nicolaus-copernicus/": {"t": "Nicolaus Copernicus", "s": "Renaissance polymath who proposed the Sun-centered model of the universe."}, "https://codexery.com/electromagnetism-and-waves/e/electromagnetism-and-waves/resonance/": {"t": "Resonance", "s": "Resonance amplifies vibrations when frequency matches a system's natural frequency."}, "https://codexery.com/hypothetical-astronomical-objects/e/hypothetical-astronomical-objects/theia-hypothetical-planet/": {"t": "Theia (hypothetical planet)", "s": "Hypothetical planet whose collision with Earth formed the Moon."}, "https://codexery.com/narrative-forms-and-devices/e/narrative-forms-and-devices/science-fiction/": {"t": "Science fiction", "s": "Genre of speculative fiction about advanced technology and its consequences."}, "https://codexery.com/miscellaneous-philosophy-and-religion/e/miscellaneous-philosophy-and-religion/holism/": {"t": "Holism", "s": "Systems possess properties as wholes beyond their parts."}, "https://codexery.com/linguistic-concepts-and-phenomena/e/linguistic-concepts-and-phenomena/pejorative/": {"t": "Pejorative", "s": "A term expressing negative or disrespectful connotation."}, "https://codexery.com/inventors/e/great-inventors/archimedes/": {"t": "Archimedes", "s": "Ancient Greek mathematician, physicist, engineer, astronomer, and inventor of Syracuse."}, "https://codexery.com/novels-about-magic/e/novels-about-magic/discworld/": {"t": "Discworld", "s": "A flat world on a giant turtle, satirizing fantasy and reality."}, "https://codexery.com/historical-figures/e/notable/edgar-allan-poe/": {"t": "Edgar Allan Poe", "s": "Master of the macabre and pioneer of detective fiction"}, "https://codexery.com/narrative-forms-and-devices/e/narrative-forms-and-devices/space-opera/": {"t": "Space opera", "s": "Epic outer space adventures with faster-than-light travel."}, "https://codexery.com/narrative-techniques-genres/e/narrative-techniques-and-genres/historical-fiction/": {"t": "Historical fiction", "s": "Fictional narratives set in real historical periods."}, "https://codexery.com/astronomical-concepts-and-techniques/e/astronomical-concepts-and-techniques/umbra-penumbra-and-antumbra/": {"t": "Umbra, penumbra and antumbra", "s": "Three distinct parts of a shadow from an opaque object."}, "https://codexery.com/astronomy-space/e/astronomy-and-space/lunar-eclipse/": {"t": "Lunar eclipse", "s": "A lunar eclipse occurs when the Moon passes through Earth's shadow."}, "https://codexery.com/lines-hemispheres/e/lines-and-hemispheres/azimuth/": {"t": "Azimuth", "s": "Horizontal angle from north used in navigation and astronomy."}, "https://codexery.com/physical-geography-elevation/e/physical-geography-and-elevation/elevation/": {"t": "Elevation", "s": "Height of Earth's surface above a reference geoid."}, "https://codexery.com/astrophotography/e/astrophotography/air-mass-astronomy/": {"t": "Air mass (astronomy)", "s": "Air mass measures atmospheric path length affecting celestial brightness."}, "https://codexery.com/optics-and-photonics/e/optics-and-photonics/rayleigh-scattering/": {"t": "Rayleigh scattering", "s": "Rayleigh scattering explains why the sky is blue.", "i": "https://codexery.com/optics-and-photonics/img/optics-and-photonics/rayleigh-scattering.webp", "c": "Hibiscus Rosa Sinensis · CC BY 4.0"}, "https://codexery.com/historical-figures/e/scientists/henry-george/": {"t": "Henry George", "s": "American political economist and journalist, author of Progress and Poverty"}, "https://codexery.com/nonfiction-and-reference/e/part-1/progress-and-poverty/": {"t": "Progress and Poverty", "s": "In 1879, Henry George published his first book, Progress and Poverty: An Inquiry into the Cause of Industrial Depressions and of Increase of Want with Increase "}, "https://codexery.com/poetry-collections-and-epic-poems/e/poetry-collections-and-epic-poems/leaves-of-grass/": {"t": "Leaves of Grass", "s": "Leaves of Grass is a poetry collection by American poet Walt Whitman."}, "https://codexery.com/historical-figures/e/notable/george-orwell/": {"t": "George Orwell", "s": "English writer known for his critiques of totalitarianism and social injustice."}, "https://codexery.com/economic-concepts/e/economic-concepts/economy/": {"t": "Economy", "s": "A social domain of production, distribution, trade, and consumption.", "i": "https://codexery.com/economic-concepts/img/economic-concepts/economy.webp", "c": "France. Ambassade (U.S.). Service de presse et d'information, France. Ambassade. · Public domain"}, "https://codexery.com/festivals-and-celebrations/e/festivals-and-celebrations/earth-day/": {"t": "Earth Day", "s": "Annual April 22 event demonstrating support for environmental protection."}, "https://codexery.com/hiv-aids-activists/e/hiv-aids-activists/jeremy-irons/": {"t": "Jeremy Irons", "s": "English actor and UN Goodwill Ambassador for the FAO."}, "https://codexery.com/phantom-places-discovery/e/phantom-places-and-discovery/globe/": {"t": "Globe", "s": "Spherical model of Earth or the heavens without distortion."}, "https://codexery.com/lines-hemispheres/e/lines-and-hemispheres/tropic-of-cancer/": {"t": "Tropic of Cancer", "s": "The northernmost circle where the Sun stands directly overhead."}, "https://codexery.com/lines-hemispheres/e/lines-and-hemispheres/tropic-of-capricorn/": {"t": "Tropic of Capricorn", "s": "The southernmost latitude where the Sun can be seen directly overhead."}, "https://codexery.com/radio-propagation/e/radio-propagation/geomagnetic-storm/": {"t": "Geomagnetic storm", "s": "A temporary disturbance of Earth's magnetosphere driven by solar plasma structures."}, "https://codexery.com/radio-propagation/e/radio-propagation/ionosphere/": {"t": "Ionosphere", "s": "Ionized upper atmosphere enabling long-distance radio propagation."}, "https://codexery.com/units-measurement/e/units-and-measurement/tesla-unit/": {"t": "Tesla (unit)", "s": "SI unit of magnetic flux density, named after Nikola Tesla."}}